HUBRECHT. Pl. HH. 
154 
Zo ; be 
Fig. 153. External aspect of the villiferous blastocyst of the pig (after 
Strahl, 06). — Fig. 154. The elongated early blastocyst of the sheep (after 
Bonnet). — Fig. 155. The tropoblast of Manis with local proliferations (after 
Weber). 
